CIRCUIT ARRANGEMENT FOR MEASURING ACTIVE RESISTANCE OF ELECTRIFIED LINE POWER CIRCUIT LOOP

The invention concerns a circuit arrangement with short-circuit system (7), connected in parallel to a closed measuring loop formed of a contact line (6) and track circuit (8). The closed loop of the measured main circuit is connected by the contact line (6) to the limiting resistor (3), which is connected to the voltage source (1) through a switch (2). Connected between the output terminal of the limiting resistor (3) and start of the contact line (6) is the first current measuring unit (4). At the same time, connected between the start of the contact line (6) and start of the track circuit (8) is the resistance standard (11). Connected in serial between the resistance standard (11) and the start of the contact line (6) is a second current measurement unit (9) and/or a voltage measurement unit (10) is connected to the resistance standard (11). The connection arrangement can be applied for various types of supply systems of electrified traction sections.